Specifications

ManualsBrandsPhilips ManualsTVs & monitorsL04HU

Published by BB 0469 Service PaCE Printed in the Netherlands Subject to modification EN 3122 785 14840

retrieval system or transmitted, in any form or by any means, electronic,

mechanical, photocopying, or otherwise without the prior permission of Philips.

Colour Television Chassis

L04HU

E_14840_000.eps

210904

Contents Page Contents Page

1. Technical Specifications, Connections,

and Chassis Overview 2

2. Safety Instructions, Warnings, and Notes 4

3. Directions for Use 6

4. Mechanical Instructions 7

5. Service Modes, Error Codes, and Faultfinding 9

6. Block Diagrams, Testpoint Overviews,

and Waveforms

Wiring Diagram Standard 19

Wiring Diagram System 20

Block Diagram Supply and Deflection 21

Testpoint Overview Mono Carrier 22

Block Diagram Video 23

Testpoint Overview CRT Panel 24

Block Diagram Audio/Control 25

I2C and Supply Voltage Overview 26

7. Circuit Diagrams and PWB Layouts Diagram PWB

Power Supply (Diagram A1) 27 39-44

Diversity Table for A1 (Power Supply) 28 39-44

Deflection (Diagram A2) 29 39-44

Diversity Table for A2 (Deflection) 30 39-44

Tuner IF (Diagram A3) 31 39-44

Hercules (Diagram A4) 32 39-44

Features & Connectivities (Diagram A5) 33 39-44

Class D - Audio Amplifier (Diagram A6) 34 39-44

Audio Amplifier (Diagram A7) 35 39-44

Rear I/O Cinch (Diagram A8) 36 39-44

Front Control (Diagram A9) 37 39-44

DVD Power Supply (Reserved) (Diagram A10) 38 39-44

CRT Panel (Diagram B1) 45 47-48

ECO Scavem Panel (Diagram B2) 46 47-48

Side AV + Headphone Panel (Diagram D) 49 50

Top Control Panel (Diagram E) 51 51

External Supply (Diag. EPS1B) 52 52

Linearity & Panorama Panel (Diagram G) 53 53

SP/LS Module (NA-LA) (Diagram I1) 54 55

Front AV Module (Diagram I2) 56 57

Front Interface Panel (Diagram J) 58 58

Front Interface Module (Diagram J1) 59 60

8. Alignments 61

9. Circuit Descriptions 66

Abbreviation List 76

IC Data Sheets 77

10 Spare Parts List (not applicable) 78

11 Revision List 79

Summary of content (79 pages)

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Colour Television Chassis L04HU AA E_14840_000.eps 210904 Contents Page 1. Technical Specifications, Connections, and Chassis Overview 2. Safety Instructions, Warnings, and Notes 3. Directions for Use 4. Mechanical Instructions 5. Service Modes, Error Codes, and Faultfinding 6.
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EN 2 1. Technical Specifications, Connections, and Chassis Overview L04HU AA 1. Technical Specifications, Connections, and Chassis Overview Notes: • Described specifications are valid for the whole product range. • Figures below can deviate slightly from the actual situation, due to different set executions. 1.2 1.1 Technical Specifications 1.2.1 1.1.1 Reception Display type Screen size Tuning system Color systems Sound systems Channel selections IF picture carrier Aerial input A/V Connections 1.
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Technical Specifications, Connections, and Chassis Overview 1.3 AV1 In Ye - Video (CVBS) 1 V_pp / 75 ohm Wh - Audio - L 0.5 V_rms / 10 kohm Rd - Audio - R 0.5 V_rms / 10 kohm jq jq jq AV2 In Ye - Video (CVBS) 1 V_pp / 75 ohm Wh - Audio - L 0.5 V_rms / 10 kohm Rd - Audio - R 0.5 V_rms / 10 kohm jq jq jq AV2 In (SVHS) 1 - Ground 2 - Ground 3 -Y 4 -C H H jq jq GND GND 1 V_pp / 75 ohm 0.3 V_pp / 75 ohm L04HU AA 1.
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EN 4 2. L04HU AA Safety Instructions, Warnings, and Notes 2. Safety Instructions, Warnings, and Notes 2.1 – Safety Instructions Safety regulations require that during a repair: • Connect the set to the Mains (AC Power) via an isolation transformer (> 800 VA). • Replace safety components, indicated by the symbol h, only by components identical to the original ones. Any other component substitution (other than original type) may increase risk of fire or electrical shock hazard.
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Safety Instructions, Warnings, and Notes 2.3.3 Rework on BGA (Ball Grid Array) ICs • General Although (LF)BGA assembly yields are very high, there may still be a requirement for component rework. By rework, we mean the process of removing the component from the PWB and replacing it with a new component. If an (LF)BGA is removed from a PWB, the solder balls of the component are deformed drastically so the removed (LF)BGA has to be discarded.
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EN 6 3. L04HU AA Directions for Use 3. Directions for Use You can download this information from the following website: http://www.philips.
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Mechanical Instructions L04HU AA 4. EN 7 4. Mechanical Instructions 1. Disconnect the degaussing coil [1]. 2. Release the two fixation clamps (at the mid left and mid right side of the bracket), and remove the bracket from the bottom tray, by pulling it backwards [2]. 3. Turn the chassis tray 90 degrees counter clockwise. 4. Move the panel bracket somewhat to the left and flip it 90 degrees [3], with the components towards the CRT. 5. Turn the panel bracket with the rear I/O toward the CRT. 6.
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EN 8 4.3.3 4.3.4 4. L04HU AA Mechanical Instructions 4.4 LTI/CTI Interface Panel Remove the LTI/CTI Interface panel from the Mono Carrier, by disconnecting it from connector 1212. To re-assemble the whole set, do all processes in reverse order. Top Control Assy/Panel Note: before you mount the rear cover, perform the following checks: • Check whether the AC power cord is mounted correctly in its guiding brackets. • Check whether all cables are replaced in their original position 1.
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Service Modes, Error Codes, and Fault Finding L04HU AA 5. EN 9 5. Service Modes, Error Codes, and Fault Finding – – – – – Index of this chapter: 1. Test Points 2. Service Modes 3. Problems and Solving Tips (related to CSM) 4. ComPair 5. Error Codes 6. The Blinking LED Procedure 7. Protections 8. Fault Finding and Repair Tips 5.1 Test Points This chassis is equipped with test points in the service printing. In the schematics test points are identified with a rectangle box around Fxxx or Ixxx.
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EN 10 7. 8. 9. 10. 11. 5. L04HU AA Service Modes, Error Codes, and Fault Finding CSM Menu menu item and press the MENU RIGHT key. The content of the error buffer is cleared ISP Mode Can be used to switch on the television to ISP mode (for uploading software Options To set the Option Bytes. See chapter 8.3.1 for a detailed description. Tuner To align the Tuner. See chapter 8.3.3 for a detailed description. White Tone To align the White Tone. See chapter 8.3.4 for a detailed description.
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Service Modes, Error Codes, and Fault Finding 5. EN 11 8. The new PERSONAL preference value is automatically stored. 2. Press the MENU button on the remote control transmitter. This brings up the normal user menu. 3. In the normal user menu, use the MENU UP/DOWN keys to highlight the PICTURE sub menu. 4. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu. 5. Use the MENU UP/DOWN keys (if necessary) to select BRIGHTNESS. 6.
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EN 12 5. Service Modes, Error Codes, and Fault Finding L04HU AA television is working correctly and only to a certain extends. When this is not the case, ComPair will guide you through the faultfinding tree by asking you questions (e.g. Does the screen give a picture? Click on the correct answer: YES / NO) and showing you examples (e.g. Measure test-point I7 and click on the correct oscillogram you see on the oscilloscope). You can answer by clicking on a link (e.g.
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Service Modes, Error Codes, and Fault Finding L04HU AA 5. EN 13 Table 5-2 Error code overview Error Device 5.
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EN 14 5.
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Service Modes, Error Codes, and Fault Finding 5.8.5 Ok Not Ok Picture appears? Picture not appearing Check Beam Current Limit (voltage is 1.8V-2V when brightness and contrast is set to the maximum Not Ok 5. EN 15 Tuner and IF No Picture 1. Check that the Option settings are correct. 2. If correct, check that supply voltages are there. 3. If supply voltages are present, check whether picture is present in AV. 4.
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EN 16 5. Service Modes, Error Codes, and Fault Finding L04HU AA 5.8.6 Picture Ok, No Sound Below are some guidelines for troubleshooting of the Micro Controller function. Normally Micro Controller should be checked when there is a problem of startup. 1. Check that both +3.3 V_dc and +1.8 V_dc are present. 2. Check that crystal oscillator is working. 3. Check that Power Good signal is at “high” logic, normal operation. 4. Check that HERCULES is not in standby mode. Pin 15 of HERCULES should be 0 V_dc.
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Service Modes, Error Codes, and Fault Finding 5.8.8 Audio Processing No Sound Picture Ok, No Sound Tuner IF Ok Not Ok Check Tuner/IF Ok Check AUDOUTLSL & AUDOUTLSR pin at Hercules Not Ok Check Hercules IC Ok Check Audio Amplifier Not Ok Check Audio Power Supply Check Power Supply Ok Check Audio Amplifier Circuit and loud speaker Not Ok Replace Audio Amplifier Ok Check NVM E_14480_065.eps 170204 Figure 5-12 Fault finding tree “No sound” No RF audio for QSS/Inter-Carrier stereo sets. 1.
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EN 18 5. L04HU AA Service Modes, Error Codes, and Fault Finding Personal Notes: E_06532_012.
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Block Diagrams, Testpoint Overviews, and Waveforms L04HU AA 6. 19 6.
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Block Diagrams, Testpoint Overviews, and Waveforms L04HU AA 6.
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Block Diagrams, Testpoint Overviews, and Waveforms L04HU AA 6. 21 Block Diagram Supply and Deflection G SUPPLY AND DEFLECTION J1 INTERFACE MODULE (SUPPLY PART) POWER SUPPLY EPS1B EXTERNAL - for “SYSTEM” version only - 0228 1 AC C CR1 L5 C7 +12V C23 DC 3 2 1 0228 1 2 3 4 5 N.C.
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Block Diagrams, Testpoint Overviews, and Waveforms L04HU AA 6.
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Block Diagrams, Testpoint Overviews, and Waveforms L04HU AA 6. 23 Block Diagram Video VIDEO J1 A5 INTERFACE MODULE (VIDEO PART) - for “SYSTEM” version only - 1219 1219 VIDEO INTERFACE 1 6 N.C. 2 7 N.C.
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Block Diagrams, Testpoint Overviews, and Waveforms L04HU AA 6. 24 Testpoint Overview CRT Panel CRT 3139 123 5674.
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Block Diagrams, Testpoint Overviews, and Waveforms L04HU AA 6.
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Block Diagrams, Testpoint Overviews, and Waveforms L04HU AA 6. 26 I2C and Supply Voltage Overview SUPPLY LINES DIAGRAM A2 LINE + FRAME DEFLECTION A1 POWER SUPPLY 3 4 2 1503 7541 1 B1 CRT V_DG Vbatt 5445 5402 5551 6551 17 8 5552 A4 Vbatt A7 AUDIO_AMPLIFIER 18 4 5562 6563 14 5 SUPPLY PRIMARY SIDE 7405 EHT 1543 -Vaudio 13 3 +Vaudio LINE OUTPUT CIRCUIT + E/W CORR.
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Circuit Diagrams and PWB Layouts L04HU AA 7. 27 7. Circuit Diagrams and PWB Layouts Mono Carrier: Power Supply 1 2 3 4 5 6 7 8 POWER SUPPLY 1503 LKS1AF 4 F542 "$" 1 F508 6500 4 3 RES 2507 2505 2n2 9 10 AUDIO_GND2 6572 I575 3574 3563 6564 220R BAS316 POWER-UP RESET U 6 + REG 2V7 10X + + 11 AUX I536 100p 2K2 2549 3537 4n7 2533 100K 3531 10n GND 2544 FOR MAINS 120V AC 170V (177V) 220V AC 309V (317V) ..V.. Normal Operation (..V..
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Circuit Diagrams and PWB Layouts L04HU AA 7.
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Circuit Diagrams and PWB Layouts L04HU AA 7.
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Circuit Diagrams and PWB Layouts L04HU AA 7.
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Circuit Diagrams and PWB Layouts L04HU AA 7.
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1 2 15K EHTinfo SC1_FBL A2 A5 A5 A9 INTF_U_OUT INTF_V_OUT KEY_protn 100R 1n0 2282 4K7 3279 100R 3266 4 5 A5 for ITV only LTI 100u 10V 4 2V 2V6 E 1R0 27K 3208 7203 2V9 GND_1 I201 BC327-25 7201-2 7201-1 IMX1 3 IMX1 2V 2 5 2V 2V6 for ITV only 6201 BAS316 F200 GND_1 1R0 5214 2V 7209 BSH103 GND_1 I204 +3.3V * -1V 22n 3203 150K 3206 D +3V 27K BAS316 6207 +3.3V 100n 2217 2214 2269 39p 7204 BC327-25 2V8 6 2V 2V 12V I224 +1.8V_A I225 F209 5K6 +1.
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Circuit Diagrams and PWB Layouts L04HU AA 7.
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Circuit Diagrams and PWB Layouts L04HU AA 7.
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Circuit Diagrams and PWB Layouts L04HU AA 7.
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Circuit Diagrams and PWB Layouts L04HU AA 7.
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Circuit Diagrams and PWB Layouts L04HU AA 7.
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Circuit Diagrams and PWB Layouts L04HU AA 7.
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Circuit Diagrams and PWB Layouts L04HU AA 7. 39 Layout Mono Carrier: (Top Side) 1000 1001 1002 1003 1004 1005 1010 1011 1012 1013 1137 1138 1204 1205 1206 1207 1208 E8 E6 E5 E5 E7 E8 E7 E7 E6 E8 C8 E7 C6 D5 D5 E7 D7 1212 1213 1219 1220 1221 1222 1223 1227 1228 1229 1234 1236 1237 1240 1241 1262 1280 C6 C5 C7 E4 C5 D3 D8 C7 E8 C8 D5 D7 E8 D4 D5 D7 E3 1281 1401 1402 1404 1451 1452 1453 1454 1500 1501 1502 1503 1504 1505 1506 1507 1508 3139 123 5673.
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Circuit Diagrams and PWB Layouts L04HU AA 7.
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Circuit Diagrams and PWB Layouts L04HU AA 7. 41 Layout Mono Carrier (Part 1 Bottom Side) Part 1 E_14480_003a.
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Circuit Diagrams and PWB Layouts L04HU AA 7. 42 Layout Mono Carrier (Part 2 Bottom Side) Part 2 E_14480_003b.
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Circuit Diagrams and PWB Layouts L04HU AA 7. 43 Layout Mono Carrier (Part 3 Bottom Side) Part 3 E_14480_003c.
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Circuit Diagrams and PWB Layouts L04HU AA 7. 44 Layout Mono Carrier (Part 4 Bottom Side) Part 4 E_14480_003d.
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Circuit Diagrams and PWB Layouts CRT Panel 1 2 3 L04HU AA 4 7.
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Circuit Diagrams and PWB Layouts L04HU AA 7.
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Circuit Diagrams and PWB Layouts L04HU AA 7. 47 Layout CRT Panel (Top Side) 3139 123 5674.1 E_14480_004.
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Circuit Diagrams and PWB Layouts L04HU AA 7. 48 Layout CRT Panel (Bottom Side) 2333 3376 2376 3139 123 5674.1 E_14480_005.
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Circuit Diagrams and PWB Layouts Side AV + Headphone Panel 1 2 L04HU AA 3 4 7. 49 5 6 7 8 9 10 SIDE AV PANEL + HP PANEL 6 1 2 3 4 5 Video_Gnd 3159 1250-C * I155 4 * 1277-B * * 2178 470pF 1279 I162 2176 3 3157 470pF for 2X10W from 1902 B 2 I163 * 7 3 2 1 I171 8 9 C 1250-B 330p 2u2 50 2171 2180 47K 3151 * F150 D 9180 F151 E_14480_037.eps 150904 3139 123 5718.
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Circuit Diagrams and PWB Layouts L04HU AA 7. 50 Layout Side AV + Headphone Panel (Top Side) 1232 1250 1251 1252 A4 A3 A2 A1 1254 1277 1278 1279 A3 A2 A4 A4 2171 2172 2173 2174 A1 A2 A3 A2 2175 2180 3150 3151 A2 A1 A2 A2 3152 3153 3154 3155 A3 A3 A1 A1 3156 3157 3158 3159 A4 A4 A1 A1 3160 6161 9152 9175 A1 A1 A3 A2 9180 A1 9181 A1 E_14480_038.eps 100204 3139 123 5718.1 Layout Side AV + Headphone Panel (Bottom Side) 2176 A1 2178 A1 2181 A2 3161 A2 4180 A3 2181 3139 123 5718.
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Circuit Diagrams and PWB Layouts L04HU AA 7. 51 Top Control Panel Layout Top Control Panel (Bottom Side) 1010 A1 1012 B3 1014 B2 3011 A2 3013 A3 3015 A3 F011 A2 I011 A2 1011 B3 1013 B2 3010 A2 3012 A2 3014 B3 3016 B3 F012 A3 I013 A3 1 2 I017 B3 I018 A3 3010 A1 3011 A1 3012 A1 3013 B1 3014 B1 3015 B1 3016 C1 3 E TOP CONTROL (PV2) 1010 1 FROM 1682 OF A 2 KEY_PROTN F011 A * 3015 3016 * SKQNAB volume- B I017 E_14480_031.eps 190204 3139 123 5714.
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Circuit Diagrams and PWB Layouts L04HU AA 7.
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Circuit Diagrams and PWB Layouts L04HU AA 7.
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Circuit Diagrams and PWB Layouts L04HU AA 7. 54 SP/LS Module (NA-LA) SP/LS MODULE (NA-LA) I1 +5V R6 100R R7 100R R2 10K +5V R5 100R R3 10K Q1 BC847B R4 10K U1 SMART LOADER SOCKET Clo ck 1 Data_i n 2 +5V 3 Data_ou t 4 Gn d 5 IR_data 6 +5V D6 C6V8 R11 10K R12 10K +5V +5V R13 10K D7 C6V8 R9 RJ11 +5V +5V D3 C6V8 +5V D4 C6V8 1259 100R D5 C6V8 5. 6K 22R 1 W 1 1 R33 R17 1 4. 7K Data_i n 3 Clock 4 Gn d 5 IR_o ut 6 +3.
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Circuit Diagrams and PWB Layouts L04HU AA 7. 55 Layout SP/LS Module (NA-LA) (Top Side) D1 Black 1 U2 D2 R1 Personal Notes: 1 1259 1 White C1 _ 1246 RT1 1251 + C7 J5 U4 1 R19 White + U1 1 US_LA EU 3139 188 6150.1 3139 188 6151.1 REV. 1.0 1 0262 E_14820_002.eps 180504 3139 188 6150.1 Layout SP/LS Module (NA-LA) (Bottom Side) 1 1 US_LA EU C6 R2 JR1 1 JR2 R17 R11 Q1 Q6 R22 R3 D3 R9 R20 K R21 R24 D10 Q7 Q8 C5 A D4 K A K D7 A A 1 K K K 3139 188 6150.
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Circuit Diagrams and PWB Layouts L04HU AA 7.
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Circuit Diagrams and PWB Layouts L04HU AA 7. 57 Layout Front AV Module (Top Side) Personal Notes: 3139 188 6146.1 E_14820_030.eps 100904 Layout Front AV Module (Bottom Side) 3139 188 6146.1 E_14820_031.eps 100904 E_06532_012.
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Circuit Diagrams and PWB Layouts L04HU AA 7. 58 Front Interface Panel Layout Front Interface Panel (Top Side) 1 2 3 1211 D1 1231 C3 1505 A1 4 FRONT INTERFACE PANEL A A LATAM 100V - 250V NAFTA 110V EUROPE 220V - 240V 9001 RES 1231 AC MAINS T4.
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Circuit Diagrams and PWB Layouts L04HU AA 7. 59 Interface Module +1 2V USA ONLY + EUROPE & 77 19 37 48 15 0K 77 17 3 7 47 10K 27 17 res erve White 37 59 1K 27 18 6.8 u BC847 B +5 V A9 (Black) 1 2 3 4 5 IR +5 V GND * 40 12 0R0 * 40 11 37 16 10 K 37 45 10 K 37 10 6 7 06 6 7 04 10 0R HSYNC 77 00 BC847 B 37 46 10 K 9 10 AGND AGND 11 13 +5 V +5 V AGND 37 62 10 0R, 5% 7 6 - 37 29 4k 7 37 20 2.
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Circuit Diagrams and PWB Layouts L04HU AA 7. 60 Layout Interface Module (Top Side) 3139 188 6147.1 Layout Interface Module (Bottom Side) E_14820_033.eps 150904 3139 188 6147.1 E_14820_034.
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Alignments L04HU AA 8. EN 61 8. Alignments 8.1 Index of this chapter: 1. General Alignment Conditions 2. Hardware Alignments 3. Software Alignments and Settings 6. 7. 8. 9. Note: • The Service Default and Alignment Mode (SDAM) is described in chapter 5 “Service Modes, ...”. • Menu navigation is done with the CURSOR UP, DOWN, LEFT, or RIGHT keys of the remote control transmitter. 10. General Alignment Conditions 11.
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EN 62 8.3.1 8. Alignments L04HU AA Options Table 8-2 Option Bytes Table 8-1 Option Menu Bit(value) OB1 LLLL AAAABC X.
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Alignments L04HU AA 8. EN 63 Option Bit Assignment Following are the option bit assignments for all L01 ITV software clusters.
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EN 64 8.3.2 8. L04HU AA Alignments The Deflection Sub menu contains the following items: • AKB ON to enable, OFF to disable the 'black current loop' (AKB = Auto Kine Bias). • Brightness (set Brightness) • Contrast (set Contrast) "See VG2 alignment" 8.3.3 Geometry Deflection 1 VERT. SLOPE 2 VERT. SHIFT 3 VERT. AMPLITUDE 4 V.S-CORRECTION 5 HOR. SHIFT 6 HOR. AMPLITUDE 7 E/W PARABOLE 8 UPPER E/W CORNER 9 LOWER E/W CORNER 10 E/W TRAPEZIUM 11 HOR. PARALLELOGRAM 12 HOR.
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Alignments • • • • Vertical Amplitude (VA) Align the vertical amplitude so that the complete test pattern is visible. Vertical S-Correction (SC) Align the vertical linearity, meaning that vertical interval of a grid pattern must be equal over the entire screen height. Vertical Shift (VSH) Align the vertical centring so that the test pattern is located vertically in the middle. Repeat the 'vertical amplitude' alignment if necessary.
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EN 66 9. L04HU AA Circuit Descriptions, List of Abbreviations, and IC Data Sheets 9. Circuit Descriptions, List of Abbreviations, and IC Data Sheets • Index of this chapter: 1. Introduction 2. Power Supply 3. Deflection 4. Control 5. Tuner and IF 6. Source Selection 7. Audio 8. Video 9. Abbreviations 10. IC Data Sheets • • • • • The tuning system features 181 channels with on-screen display. The main tuning system uses a tuner, a microcomputer, and a memory IC mounted on the main panel.
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Circuit Descriptions, List of Abbreviations, and IC Data Sheets 9.2.2 L04HU AA 9. EN 67 Timing Diagrams Power ON - To Standby - Out of Standby - Power OFF To Standby Power ON Normal Power off Out of Standby Standby mode Perform hard-reset Normal 3, 3.3, 6V POWER_DOWN STDBY +1V8 EXT. Stdby_con Vbat, Vaudio STB bit VT_supply +5V 10mS PIP Supplies B Closed Open Relay status 1s(ref) 2s(ref) 200ms 100ms(ref) 800ms 200ms 2s(ref) 20ms(ref) 10ms(ref 10ms(ref) E_14480_073.
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EN 68 9.2.3 9. L04HU AA Circuit Descriptions, List of Abbreviations, and IC Data Sheets Table 9-3 PSU voltage overview Startup Sequence When the set is connected to the AC power, the rectified line voltage (via winding 4-5 of L5531 connected to pin 14 of IC7531) will start the internal voltage source to charge the V_cc capacitor (C2532). The IC starts to switch as soon as the V_cc reaches the V_cc start level of 9.5 V.
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Circuit Descriptions, List of Abbreviations, and IC Data Sheets L04HU AA 9. EN 69 First Part of Scan Pin 62 of the UOC delivers the horizontal drive signal for the Line Output stage. This signal is a square pulse of line frequency. L5402 is the flyback drive transformer. This transformer de-couples the line output stage from the UOC. It has a direct polarization. The flyback drive circuit works with the start-up supply taken from +6V of the Aux supply (and subsequently taking from VlotAux+9V).
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EN 70 9. L04HU AA Circuit Descriptions, List of Abbreviations, and IC Data Sheets • Geometry distortion due to the impedance of the LOT causing the EHT to drop. • Picture blooming due to the picture characteristics Because of the above mentioned, we will need a circuit for Beam Current Limiter (BCL) and EHT compensation (EHT_info). These two circuits derive the signal from the picture tube current info through LOT pin 10.
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Circuit Descriptions, List of Abbreviations, and IC Data Sheets During the first half of the intensity increase, the scan velocity is increased (thus decreasing the current density by spreading it on a wider area). During the second half of the intensity increase, the scan velocity is decreased (increasing the current density by concentrating it on a smaller area). The increasing current density transition is sharpened.
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EN 72 • • • • • • • • • 9. L04HU AA Circuit Descriptions, List of Abbreviations, and IC Data Sheets disable it during Standby. It is of logic “low” (0 V) under normal operation and “high” (3.3 V) during Standby. IR. This input pin is connected to an RC5 remote control receiver. SEL-IF-LL’/ M-TRAP. For AP: All L04 AP sets are Multi System QSS set. This is an output pin to switch the Video SAW filter between M system and other systems. – 0: NTSC M (default) – 1: PAL B/G, DK, I, L Write Protect.
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Circuit Descriptions, List of Abbreviations, and IC Data Sheets 9.5.3 Option Settings The option settings for the Tuner type can be found in Option setting 1 of the SAM mode. The Option settings for Option 1 are as follows: • Option Byte 1 – Bit 7: OP_PHILIPS_TUNER – Bit 6: OP_FM_RADIO – Bit 5: OP_LNA – Bit 4: OP_ATS – Bit 3: OP_ACI – Bit 2: OP_UK_PNP – Bit 1: OP_VIRGIN_MODE – Bit 0: OP_CHINA For more details on the option settings, please refer to the chapter 8 “Alignments”. 9.
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EN 74 9.6.3 9. L04HU AA Circuit Descriptions, List of Abbreviations, and IC Data Sheets Audio Source Selection NVM The signals coming out of the DEMDEC (internal demodulator/ decoder block of the Hercules) are selectable and consist of the following (depending on the transmission): • DEC L/R (Can be NICAM, FM 2CS, or BTSC Stereo). • Mono (Refers to fallback/forced Mono in Stereo Transmission). • SAP.
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Circuit Descriptions, List of Abbreviations, and IC Data Sheets 9.7.4 Options The option settings allow for process of the video as per set specification. The option settings can be found in “Option 2” and “Option 6” in the SAM mode.
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EN 76 9. L04HU AA Circuit Descriptions, List of Abbreviations, and IC Data Sheets 9.
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Circuit Descriptions, List of Abbreviations, and IC Data Sheets 9.11 IC Data Sheets L04HU AA 9. EN 77 9.11.1 Diagram H, TDA9178 (IC7610) This section shows the internal block diagrams and pin layouts of ICs that are drawn as "black boxes" in the electrical diagrams (with the exception of "memory" and "logic" ICs).
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EN 78 10. L04HU AA 10.
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Revision List 11. Revision List First release. L04HU AA 11.